Open cholecystectomy was very common in the past, and due to the underdeveloped or immature lumpectomy technology, open cholecystectomy usually took 1-2 hours. At present, laparoscopic cholecystectomy is almost always used for cholecystectomy, and the operation time is usually about half an hour. At present, very few patients undergo laparoscopic cholecystectomy, and then they are transferred to open cholecystectomy, mainly because the surgeon finds that if laparoscopic cholecystectomy is used, the bile duct may be accidentally injured because of serious adhesions or edema in the gallbladder triangle; or if the common bile duct is found to be diseased during surgery, the operation will be transferred to open surgery, so the laparoscopic transfer to open cholecystectomy The operation usually takes about 2-3 hours, or even longer.